Self-assembly of PbTe quantum dots into nanocrystal superlattices and glassy films

Journal of the American Chemical Society
Jeffrey J UrbanChristopher B Murray

Abstract

Monodisperse lead telluride (PbTe) nanocrystals ranging from approximately 4 to 10 nm in diameter are synthesized to provide quantum dot building blocks for the design of novel materials for electronic applications. Two complementary synthetic approaches are developed that enable either (1) isolation of small quantities of nanocrystals of many different sizes or (2) the production of up to 10 g of a single nanocrystal size. PbTe nanocrystals are characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), and optical absorption. Assembly of PbTe nanocrystals is directed to prepare nanocrystal solids that display either short-range (glassy solids) or long-range (superlattices) packing order by varying deposition conditions. Film order and average interparticle spacing are analyzed with grazing-incidence small-angle X-ray scattering (GISAXS) and high-resolution scanning electron microscopy (HRSEM). We perform the first optical and electronic studies of PbTe solids and demonstrate that chemical activation of these films enhances conductivity by approximately 9-10 orders of magnitude while preserving their quantum dot nature.

References

Oct 26, 1999·Science·B A RidleyJ M Jacobson
Nov 23, 2000·Accounts of Chemical Research·F W Wise
Sep 28, 2002·Science·T C HarmanB E LaForge
Sep 24, 2004·Journal of the American Chemical Society·Weigang LuJun Lin
Jan 11, 2005·Nature Materials·Steven A McDonaldEdward H Sargent
Mar 22, 2005·Chemical Society Reviews·Daniel Vanmaekelbergh, Peter Liljeroth
May 12, 2005·Journal of the American Chemical Society·Kyung-Sang ChoChristopher B Murray
Jun 16, 2005·Journal of the American Chemical Society·Elena V ShevchenkoChristopher B Murray
Sep 30, 2005·Nature·Yadong Yin, A Paul Alivisatos
Oct 8, 2005·Science·Dmitri V Talapin, Christopher B Murray
Oct 26, 2005·Physical Review Letters·Hugo E Romero, Marija Drndic
Jul 21, 2006·The Journal of Physical Chemistry. B·Weigang LuZhong Lin Wang

❮ Previous
Next ❯

Citations

Mar 28, 2012·Accounts of Chemical Research·Libing WangNicholas A Kotov
Jun 29, 2010·Journal of the American Chemical Society·William J BaumgardnerTobias Hanrath
Oct 8, 2011·Journal of the American Chemical Society·Zewei QuanJiye Fang
Feb 4, 2012·Journal of the American Chemical Society·Ronald B SorianoMercouri G Kanatzidis
Jul 24, 2012·Journal of the American Chemical Society·Jonghun LeeShouheng Sun
Jul 3, 2009·Journal of the American Chemical Society·Jin JooVictor I Klimov
Apr 29, 2010·Journal of the American Chemical Society·Maksym V KovalenkoDmitri V Talapin
Apr 19, 2011·Langmuir : the ACS Journal of Surfaces and Colloids·Benoit P PichonSylvie Begin-Colin
Feb 15, 2012·ACS Nano·Clive R BealingRichard G Hennig
Jul 13, 2006·Physical Chemistry Chemical Physics : PCCP·Hao ZhangHelmuth Möhwald
Apr 6, 2011·Nanoscale·Priscilla D AntunezRichard L Brutchey
Jul 31, 2010·Science·Constanze SchlieheHorst Weller
Feb 11, 2014·ACS Applied Materials & Interfaces·Douglas A Hines, Prashant V Kamat
Apr 23, 2014·ACS Nano·Nicholas A Kotov, Paul S Weiss
Feb 24, 2016·Langmuir : the ACS Journal of Surfaces and Colloids·Wei Cheng, Markus Niederberger
Nov 10, 2015·Nature Nanotechnology·Cherie R Kagan, Christopher B Murray
Jul 17, 2015·Journal of the American Chemical Society·Ronald B SorianoMercouri G Kanatzidis
Aug 24, 2016·Chemical Reviews·Michael A BolesDmitri V Talapin
Apr 21, 2017·Chemical Society Reviews·Zhen HeShu-Hong Yu
Apr 22, 2017·Journal of the American Chemical Society·Qianglu LinJeffrey M Pietryga
May 14, 2014·Journal of the American Chemical Society·Xiaonan GaoIndika U Arachchige
Dec 17, 2014·Langmuir : the ACS Journal of Surfaces and Colloids·Alexander V BaranovKevin Berwick
Mar 10, 2018·Physical Chemistry Chemical Physics : PCCP·Athmane Tadjine, Christophe Delerue
Mar 10, 2018·Nanomaterials·Charles N MeltonLinda S Hirst
Nov 10, 2011·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Xi ZhangRiichi Nishimura
May 21, 2010·Small·Arnaud DemortièreBertrand Donnio
Nov 20, 2016·Advanced Materials·Jian Zhu, Mark C Hersam
May 26, 2007·Angewandte Chemie·Jongnam ParkTaeghwan Hyeon
Sep 22, 2007·Angewandte Chemie·Zhongbin ZhuangYadong Li
Dec 15, 2007·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Sachin KingeDavid N Reinhoudt

❮ Previous
Next ❯

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.